My husband is trying to repair a Dixie Chopper X2400 . It's impossible to read the serial numbers anymore. It has a Kohler 582S horizontal engine and he is looking for a 13 splined input shaft for the gear box that slides into the crank shaft. The gear box was made by Curtis Machine Co and we were told this shaft would fit either a 920447 or 925222 box . Curtis Machine Co did not have this shaft in stock anymore. Does anyone have any suggestions where I might locate something like this?